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Data Size Converter

Convert between digital storage units. Both decimal (SI, powers of 1000: KB, MB, GB) and binary (IEC, powers of 1024: KiB, MiB, GiB) units are included — the difference matters at large sizes.

About these conversions

  • All conversions pass through the byte as the base unit.
  • SI units (KB, MB, GB) are powers of 1,000; IEC binary units (KiB, MiB, GiB) are powers of 1,024.
  • Storage manufacturers label drives in decimal units, which is why a '1 TB' drive shows as ~931 GiB in an operating system that reports binary units.
  • 1 byte = 8 bits.